Abstract: A light-shading member for an optical device which has excellent reflection preventing performance can be manufactured by a simple process and can be applied to an optical device which is small and thin. Based on JIS B0601: 2001, the arithmetical mean deviation of the assessed profile Ra of the surface of the light-shading member for an optical device is 0.5 ?m or more, and the difference (Rp-Rv) between the maximum profile peak height Rp and the maximum profile valley depth Rv is less than 3. The light-shading member for an optical device preferably has a substrate film and a light-shading layer. The light-shading layer is formed on at least one surface of the substrate film. Further, the light-shading layer has an average film thickness of 2 ?m-35 ?m.

Abstract: The present invention provides a Light-shading member for an optical device, the Light-shading member can be manufactured by a simple process, i.e. can be producible, and which has excellent reflection preventing performance and can be applied to an optical device which is small and thin; and based on JIS B0601: 2001, the arithmetical mean deviation of the assessed profile Ra of the surface of the Light-shading member for an optical device that is 0.5 ?m or more, and the difference (Rp?Rv) between the maximum profile peak height Rp and the maximum profile valley depth Rv is less than 3; the Light-shading member for an optical device that preferably has a substrate film and a Light-shading layer, the Light-shading layer is formed on at least one surface of the substrate film. Further, the Light-shading layer has an average film thickness of 2 ?m-35 ?m.